10621061217 has 24 divisors (see below), whose sum is σ = 16532261928. Its totient is φ = 6531840000.

The previous prime is 10621061207. The next prime is 10621061281. The reversal of 10621061217 is 71216012601.

It is a happy number.

10621061217 is a `hidden beast` number, since 10 + 6 + 21 + 0 + 612 + 17 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3761246241 + 6859814976 = 61329^2 + 82824^2 .

It is not a de Polignac number, because 10621061217 - 2⁴ = 10621061201 is a prime.

It is a super-2 number, since 2×10621061217² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10621061207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 158967 + ... + 215667.

It is an arithmetic number, because the mean of its divisors is an integer number (688844247).

Almost surely, 2^10621061217 is an apocalyptic number.

It is an amenable number.

10621061217 is a deficient number, since it is larger than the sum of its proper divisors (5911200711).

10621061217 is a wasteful number, since it uses less digits than its factorization.

10621061217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58321 (or 58318 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

Adding to 10621061217 its reverse (71216012601), we get a palindrome (81837073818).

The spelling of 10621061217 in words is "ten billion, six hundred twenty-one million, sixty-one thousand, two hundred seventeen".